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group_1-a-α_thefirst [2018/09/10 16:24] yandow |
group_1-a-α_thefirst [2018/09/13 13:37] ruland |
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2. The Energy of the incident phosphorus is 31MeV | 2. The Energy of the incident phosphorus is 31MeV | ||
- | 3. We wrote our code, foolishly putting Isaac in charge. | + | 3. We wrote our code, foolishly putting Isaac in charge. |
+ | COSY output shown below | ||
+ | {{: | ||
- | 4. Final x and y positions were determined to be $x_f=.018$ $x_f=.009$ at dE/E=.05 | + | 4. Final x and y positions were determined to be x_f=.018 |
+ | |||
+ | 5. We used http:// | ||
+ | {{: | ||
+ | |||
+ | 5. Our energy spread is ~3.1%, the same as SECAR' | ||
+ | |||
+ | 6. Our opening angle is 7.0 mrad which is under the 25 mrad max of SECAR | ||
+ | |||
+ | 7. Our reaction has been performed before at much lower energies. (~1MeV total) | ||
+ | |||
+ | -> 9/12 | ||
+ | |||
+ | 8. We finding three bibliographical information on the reaction(P-31(p, | ||
+ | 1. (http:// | ||
+ | 2. (http:// | ||
+ | 3. (https:// | ||
+ | |||
+ | 9. Xmax(g)=σ11(1+σ12L/ | ||
+ | We need to know the values of σ11, σ12, and σ22 to find the Emittance value. | ||
+ | Changing Qurupole Strangth(g value) for make three equation. | ||
+ | and using three eqaution find three unknown parameter(σ11, | ||
+ | |||
+ | 10. Extract the distance L for the center of quad Q7 to the focal plan FP2 | ||
+ | (0.17005(center of quad)+0.5+2.365+0.5+0.26+0.28+0.26+1.75=6.08505) | ||
+ | |||
+ | 11. In emittance script.fox plus 'WRITE 6 'VAMX :' VMAX(RAY(1)) ;' and extract VMAX Value. | ||
+ | |||
+ | {{: | ||
+ | |||
+ | 12. Using σ11(1, | ||
+ | | ||
+ | |||
+ | ////// 9-13-18 ////// | ||
+ | |||
+ | 13. Original mass resolving power of SECAR before sections 3 and 4 is 742.3138003312769 when the order is set to 1. If resolving power is on the order of 1000, then you need to comment out section 3 and 4 in the fox file. | ||
+ | |||
+ | 14. We increased the effective length of Q3 by 3% and also changing DL7 and DL8, so that the center of Q3 stays in the same place. This decreases the mass resolution to 602.6032654725383 | ||
+ | |||
+ | 15. We fit the strength of Q3 using the objective function OBJ: | ||
- | 3. Our energy spread is ~3.1%, exactly SECAR' | ||
- | 4. Our openning angle is 7.0 mrad which is under the 25 mrad max |